Core barrel



Sept, 15, 1925. 1,554,067

L'. P. BRANDEL v CORE BARREL Filed Aug. s. i924 INVENTOR BY y ATTO Fl N EY Patented Sept. 15, 1925.

` UNITED STA `I.EI`WIS P. BRANDEIn O-F TAFT, CALIFORNIA.

conn Banani..

p Appncatin anni Augusto," i924. semi No; 730,274;

Be it known that I,y Lewis l). llamara., a citizen ot' the United States, residing at Taft, in the county ot' Kern and :State ol California, have invented new and useful vIrriprovements in Core Barrels, ot' which the following is a specification.

v This invention relates to drilling nieans, the general object ot the invention beingI to provide Ineans for securing a core ot earth by a drill without the saine being disturbed by the Water used in the drilling operation'.

l.Another objeet of the invention is to provide means for causing the eore barrel to be rotated from theouter barrel. i

Ai further object ot the invention is to rovide eutting means on both the eore 'arrel and on the outer barrel and to provide means on the outer barrel for reaming the hole to be eut.

This invention also consists in eert-ain other features ot' construction" and in the combination and arrangement ot the eral parts, to be hereinafter `Fully described,

l illustrated in the accompanying drawings and speeilieally pointed out in the appended elaini.

In describing iny invention in detail, reiferenee will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which j A Figure l is a section on line 1-1 ot Figure il. A

Figure 2 is an end vieW'o'tl Figure 1.

Figure 3 is a section on line 3-3 of Figure 1. y

Figure -i is a sect-ion on line 4 4 of Figure 1. y

In these views, 1 indicates a bushing or sub which is threaded to the upper end of the driving Ybarrel 2 and has its upper end threaded to receive the drilling tool.. This bushing is provided -with a bore through Whieh the water used in the drilling operation passes into the barrel 2.' A bushing -3 is threaded at its upper end to receive the lower end of the barrel 2 and its lower end is threaded eXteriorly to engage tliethreaded socket of a shoe 4.- Which is lorined with the teeth 5 at its lower end and with the reainer lugs 6 on its exterior wall immediately above said teeth. Reainer teeth 7 have dove-tailed portions engaging dove-tailed slots 8 in the exterior wall ol" the bushing 3 and these teeth 7 are held in place by the upper end o'l the lshoe ll' when the saine is screwed honie on the bushing 3. A bushing 9 is placed in the bushing 3 and is connected with said bushing by the ribs 10 on bushing Silengaging grooves 11 in bushing 3 and the ends of the ribs' 10 are engaged by an internal shoulder on the shoe 4- so that the shoe 4 holds the bushing 9 in plaee. This bushing 9-is of smaller diameter than the bore or bushing 3 and is held in spaced relation from the f bushing 3 by the ribs 13'on 'the interior `walls of the bushing 8 so that Water can pass between the two bushings from the barrel 2. A shoe 14.' is threaded to the lower end of the bushing 9 'and the toothed lower end of this shoe extends beyond the toothed end "of shoe 4 so vthat the Water escaping from between the two shoeswill not reach the eore of earth eut by the shoe 14 as the saine is protected by the extended lower end of the shoe 14. The core barrel 15 is ltol-ined in sevtions with the lower end of the lower section threaded into the shoe 9 and the diierent sections are eonne'eted together 'by the threaded sleeves 16. A eore 17 is threaded and connected by a sleeve to the upper 'section and this eore Carries a cage 18 for the hall vah'f` 1) which is the core barrel and this eore oi earth is tion that the advantages and novel 'features of my invention will be readily apparent.

.I desire it to he understood that l inay make changes 1n the construction and 1n the i combination and arrangement of the several parts, provided that siieh Ichanges fall with- 1n the'scope-of the appended claim.

I eluiinisz- 1*"A deviee'of' the class described comprising :in outer barrel, ineens :it the upper end thereof 'for engaging :i drillingr tool.` ai hush- Aing at the lower end lmvingexterior and interior rrooves therein, `reziiner teeth eiiguging the exterior grooves, :in interior bushing havin'g'ribs thereon engaging the interior grooves, a Shoe threaded to the l ture.

' y o outer bushing 'and having portions for holdsaid shoe, a. second shoe threaded to the` lower end of the second bushing' :ind having cutting teeth :1t its lower end, :in interior sleeve connected with the seeonahhushing and a. cheek valve :it the vupper end of thel said sleeve.

In .testimony whereof l :itlix my sign-.i-

LEWIS P. BRANDEL. 

